Improvement in compositions for making bricks



, UNITE STATES PATENT OFFfcE;

X. J, 'wYnTn, on CAMBRIDGE, MAssAontisnTrs.

IMPROVEMENT IN'COMPOSITIONS FOR MAKING BRICKS.

Specification forming part ofLctters Patent No. 3,517, dated March 2?, 1844.

To (11 l trlumzit mu 3} concern:

Be it known that I, NATHANIEL J. \VYETH, of Cambridge, in the county of Middlesex and State of Massachusetts, have discovered a new anduseful Gomposition of Matter from which ftions of houses it is necessary from time to time to insert pieces of wood, or, asmechanics term them, wooden bricksflinto which the nails which continethe furring are driven, and it has long been adesideratum to obtain something which shall possess the essential propcities of a brick, and yet, unlike the common brick, be penetrableby a nail without breakthe ordinary way.

Bricks molded from the above-specified com-' position may be much more cheaply-burned or of clay in them as much smaller, and the com bustion or burning of a portion of the combnstible material in the same greatly assists the prosize or materially altering its shape. By reason of this effect it will beseen that a brick conductor of heat, and by the use of it the warmth and dryness of houses may be preserved and greatly enhanced. may with safety be applied directly to the brickwork without furring and. if it is desired to have furring the boards for thesame may be quite as well as into wood.

ing or crumbling, and serve all the purposes- Bricks formed of the above composition may of the wooden bricks or blocks above mentioned. t l

The composition which I have discovered may be made into bricks which will possess the qualities above mentioned, as desirable, as well as other advantageous properties which will bespecified inthe sequel. Itis composed dent, may be varied according to the discretior or judgment of" the artisan, orhis desire to form a brick more or less porous, though very excellent quality of brick may be made from a composition formed of three parts clay to five parts of either of the combustible mew terials above mentioned.

The manner of compounding or mixing the ingredients and molding the brick is precisely be molded and burned of any size,.and maybe; made very serviceable in the construction of ice-houses, greenhouses, &c. made at a much cheaper rate thaniany other kind, while the cost of transportation is much less on account of the smaller weight of such brick. c

Having thus specified the ingredients,'&c., of mylnewly-discovered composition, I shall state my claim as follows:

I donot claim mixing combustible materials with clay for making brick; but I. claim mix-gr ing them in such proportions as will produce Witnessesa Ekaa LINCOLN, J r.,

; GRIDLE'Y'. I F. BRYANT.

similar to that for the ordinary brick, the substances being mixed in a common claymortar mill, so called, and the'brick being molded in t baked than the common kind, as the quantity I cess, and also renders the brick,when bnrned.- Z considerably porous without diminishing it's made as above described will be a good non- The plastering nailed to the brick-work (made of such bricks) They may be bricks possessing the above-named properties.

In testimony that the. foregoingyis a true? i specification ot'my said discovery 1 have I set'my signature this 12th day ofFebruary,-'

NATHL. J, WYETH, 1 

